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Mineral contents in model diet samples for different age groups
K Shiraishi1, Y Yamagami, K Kameoka
1Division of Radioecology, National Institute of Radiological Sciences, Ibaraki, Japan.
Journal of Nutritional Science and Vitaminology
|February 1, 1988
Summary
This study analyzed mineral intake across various age groups and sexes using ICP-AES. Mineral consumption varied by age, with younger children consuming less, and most elements showed significant fluctuations across groups.
Area of Science:
- Nutritional Science
- Analytical Chemistry
Background:
- Accurate assessment of mineral intake is crucial for understanding nutritional status and public health.
- Dietary patterns and food consumption vary significantly across different age groups and sexes, impacting nutrient bioavailability.
- Previous studies have established baseline mineral intake data, but comprehensive analysis across diverse demographics is ongoing.
Purpose of the Study:
- To quantify the intake of 13 essential and trace minerals in model diet samples across eight demographic groups.
- To compare mineral intake levels between different age groups (3, 16, 40, and 70 years) and sexes.
- To validate current analytical methods by comparing results with previous dietary studies.
Main Methods:
- Analysis of model diet samples from eight groups (3, 16, 40, 70 years; both sexes) using inductively-coupled plasma atomic-emission spectrometry (ICP-AES).
- Quantification of sodium (Na), potassium (K), phosphorus (P), calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), manganese (Mn), aluminum (Al), copper (Cu), barium (Ba), nickel (Ni), and molybdenum (Mo).
- Comparison of mineral intake data across age groups and sexes, and with previously published data.
Main Results:
- Mineral intake was lower in 3-year-olds due to reduced total food consumption.
- Major elements (Na, K, P, Ca, Mg) showed intake variations within approximately 20%.
- Other elements, excluding aluminum, fluctuated by 30% or more across groups. Mineral intakes for 40-year-old males largely agreed (within 16%) with prior duplicated portion study findings.
Conclusions:
- Age and total food consumption are significant determinants of mineral intake, particularly in young children.
- Dietary mineral intake exhibits considerable variability across different age groups and sexes, highlighting the need for age-specific nutritional guidance.
- ICP-AES is a reliable method for analyzing a wide range of minerals in dietary samples, with results showing consistency with previous methodologies.